summaryrefslogtreecommitdiff
AgeCommit message (Collapse)Author
2021-04-12mt76: mt7921: remove unneeded semicolonJiapeng Chong
Fix the following coccicheck warnings: ./drivers/net/wireless/mediatek/mt76/mt7921/mac.c:1402:2-3: Unneeded semicolon. Reported-by: Abaci Robot <abaci@linux.alibaba.com> Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12mt76: mt7915: fix aggr len debugfs nodeLorenzo Bianconi
Similar to mt7921, fix 802.11 aggr len debugfs reporting for mt7915 driver. Fixes: e57b7901469fc ("mt76: add mac80211 driver for MT7915 PCIe-based chipsets") Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12mt76: mt7921: fix aggr length histogramLorenzo Bianconi
Fix register definitions for 802.11 aggr length histogram estimation. Fixes: 474a9f21e2e2 ("mt76: mt7921: add debugfs support") Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12mt76: mt7615: fix memory leak in mt7615_coredump_workLorenzo Bianconi
Similar to the issue fixed in mt7921_coredump_work, fix a possible memory leak in mt7615_coredump_work routine. Fixes: d2bf7959d9c0f ("mt76: mt7663: introduce coredump support") Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12mt76: mt7615: add support for rx decapsulation offloadRyder Lee
For AP and Client mode, the hardware can pass received packets as 802.3 frames that can be passed to the network stack as-is. Tested-by: Frank Wunderlich <frank-w@public-files.de> Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12mt76: mt7615: add rx checksum offload supportRyder Lee
Set skb->ip_summed to CHECKSUM_UNNECESSARY if the hardware has validated the IP and TCP/UDP checksum Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12mt76: mt7615: enable hw rx-amsdu de-aggregationRyder Lee
Enable hw rx-amsdu de-aggregation support. This is a preliminary patch to enable rx checksum offload. Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12mt76: use threaded NAPIFelix Fietkau
With threaded NAPI, the rx handler function is no longer bound to the CPU that fired the interrupt, which significantly helps to spread the workload over multiple CPUs, especially when multiple devices are using threaded NAPI at the same time. Exclude the tx handler from threaded NAPI by using a separate dummy netdev. The work is small and short-lived enough that it makes more sense to run it in softirq instead of creating a dedicated thread Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12mt76: connac: update sched_scan cmd usageSean Wang
Update sched_scan command usage according to the current firmware submitted into linux-firmware.git. Fixes: 80fc1e37c0eb ("mt76: mt7921: rely on mt76_connac_mcu module for sched_scan and hw_scan") Co-developed-by: Soul Huang <Soul.Huang@mediatek.com> Signed-off-by: Soul Huang <Soul.Huang@mediatek.com> Signed-off-by: Sean Wang <sean.wang@mediatek.com> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12mt76: mt7921: add flush operationSean Wang
add flush operation to make sure cfg80211_mlme_deauth is able to flush the deauthtication frame into air immediately. Co-developed-by: YN Chen <YN.Chen@mediatek.com> Signed-off-by: YN Chen <YN.Chen@mediatek.com> Signed-off-by: Sean Wang <sean.wang@mediatek.com> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12mt76: mt7921: fixup rx bitrate statisticsSean Wang
Since the related rx bitrate fields have been moved to group3 in Rxv, fix rx bitrate statistics in mt7921_mac_fill_rx routine. Fixes: 163f4d22c118d ("mt76: mt7921: add MAC support") Signed-off-by: Sean Wang <sean.wang@mediatek.com> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12mt76: connac: fix up the setting for ht40 mode in mt76_connac_mcu_uni_add_bssSean Wang
Use proper value for ht40 mode configuration in mt76_connac_mcu_uni_add_bss routine and not ht20 one Fixes: d0e274af2f2e4 ("mt76: mt76_connac: create mcu library") Co-developed-by: Soul Huang <Soul.Huang@mediatek.com> Signed-off-by: Soul Huang <Soul.Huang@mediatek.com> Signed-off-by: Sean Wang <sean.wang@mediatek.com> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12mt76: mt7921: switch to new api for hardware beacon filterSean Wang
Current firmware only supports new api for enabling hardware beacon filter. Fixes: 1d8efc741df80 ("mt76: mt7921: introduce Runtime PM support") Beacon filter cmd have to rely on the associatied access point's beacon interval and DTIM information. Signed-off-by: Sean Wang <sean.wang@mediatek.com> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12mt76: mt7921: fix memory leak in mt7921_coredump_workSean Wang
Fix possible memory leak in mt7921_coredump_work. Fixes: 1c099ab44727c ("mt76: mt7921: add MCU support") Signed-off-by: Sean Wang <sean.wang@mediatek.com> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12mt76: mt7921: fix suspend/resume sequenceSean Wang
Any pcie access should happen in pci D0 state and we should give ownership back to the device at the end of the suspend procedure. Fixes: 1d8efc741df80 ("mt76: mt7921: introduce Runtime PM support") Signed-off-by: Sean Wang <sean.wang@mediatek.com> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11Merge tag 'for-5.12-rc6-tag' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux Pull btrfs fix from David Sterba: "One more patch that we'd like to get to 5.12 before release. It's changing where and how the superblock is stored in the zoned mode. It is an on-disk format change but so far there are no implications for users as the proper mkfs support hasn't been merged and is waiting for the kernel side to settle. Until now, the superblocks were derived from the zone index, but zone size can differ per device. This is changed to be based on fixed offset values, to make it independent of the device zone size. The work on that got a bit delayed, we discussed the exact locations to support potential device sizes and usecases. (Partially delayed also due to my vacation.) Having that in the same release where the zoned mode is declared usable is highly desired, there are userspace projects that need to be updated to recognize the feature. Pushing that to the next release would make things harder to test" * tag 'for-5.12-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: btrfs: zoned: move superblock logging zone location
2021-04-11Merge tag 'locking-urgent-2021-04-11' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull locking fixlets from Ingo Molnar: "Two minor fixes: one for a Clang warning, the other improves an ambiguous/confusing kernel log message" * tag 'locking-urgent-2021-04-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: lockdep: Address clang -Wformat warning printing for %hd lockdep: Add a missing initialization hint to the "INFO: Trying to register non-static key" message
2021-04-11Merge tag 'x86_urgent_for_v5.12-rc7' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Borislav Petkov: - Fix the vDSO exception handling return path to disable interrupts again. - A fix for the CE collector to return the proper return values to its callers which are used to convey what the collector has done with the error address. * tag 'x86_urgent_for_v5.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/traps: Correct exc_general_protection() and math_error() return paths RAS/CEC: Correct ce_add_elem()'s returned values
2021-04-11mt76: use PCI_VENDOR_ID_MEDIATEK to avoid open codedRyder Lee
Use PCI standard defines. Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Acked-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11mt76: mt7915: always check return value from mt7915_mcu_alloc_wtbl_reqLorenzo Bianconi
As done for mt76_connac_mcu_alloc_wtbl_req, even if this is not a real bug since mt7915_mcu_alloc_wtbl_req routine can fails just if nskb is NULL, always check return value from mt7915_mcu_alloc_wtbl_req in order to avoid possible future mistake. Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11mt76: connac: always check return value from mt76_connac_mcu_alloc_wtbl_reqLorenzo Bianconi
Even if this is not a real bug since mt76_connac_mcu_alloc_wtbl_req routine can fails just if nskb is NULL , always check return value from mt76_connac_mcu_alloc_wtbl_req in order to avoid possible future mistake. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11mt76: mt76x0: disable GTK offloadingDavid Bauer
When operating two VAP on a MT7610 with encryption (PSK2, SAE, OWE), only the first one to be created will transmit properly encrypteded frames. All subsequently created VAPs will sent out frames with the payload left unencrypted, breaking multicast traffic (ICMP6 NDP) and potentially disclosing information to a third party. Disable GTK offloading and encrypt these frames in software to circumvent this issue. THis only seems to be necessary on MT7610 chips, as MT7612 is not affected from our testing. Signed-off-by: David Bauer <mail@david-bauer.net> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11mt76: always use WTBL_MAX_SIZE for tlv allocationRyder Lee
Simplify WTBL defines. Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11mt76: mt7921: removed unused definitions in mcu.hLorenzo Bianconi
Get rid of the following definitions in mt7921/mcu.h since they are not actually used: - MT7921_WTBL_UPDATE_MAX_SIZE - MT7921_STA_UPDATE_MAX_SIZE - MT7921_WTBL_UPDATE_BA_SIZE Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11mt76: mt7921: remove unnecessary variableNigel Christian
In mt7921_pm_set() the variable "ret" is initialized to zero and then returned. Remove it and return zero. Signed-off-by: Nigel Christian <nigel.l.christian@gmail.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11mt76: mt7921: enable random mac addr during scanningLorenzo Bianconi
Notify mac80211 mt7921 devices support random mac address during hw frequency scanning Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11mt76: mt7615: support loading EEPROM for MT7613BESander Vanheule
EEPROM blobs for MT7613BE radios start with (little endian) 0x7663, which is also the PCI device ID for this device. The EEPROM is required for the radio to work at useful power levels, otherwise only the lowest power level is available. Suggested-by: Georgi Vlaev <georgi.vlaev@konsulko.com> Tested-by: Stijn Segers <foss@volatilesystems.org> Signed-off-by: Sander Vanheule <sander@svanheule.net> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11mt76: mt7915: fix tx skb dma unmapFelix Fietkau
The first pointer in the txp needs to be unmapped as well, otherwise it will leak DMA mapping entries Reported-by: Ben Greear <greearb@candelatech.com> Fixes: 27d5c528a7ca ("mt76: fix double DMA unmap of the first buffer on 7615/7915") Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11mt76: mt7615: fix tx skb dma unmapFelix Fietkau
The first pointer in the txp needs to be unmapped as well, otherwise it will leak DMA mapping entries Fixes: 27d5c528a7ca ("mt76: fix double DMA unmap of the first buffer on 7615/7915") Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11mt76: mt7615: fix key set/delete issuesFelix Fietkau
There were multiple issues in the current key set/remove code: - deleting a key with the previous key index deletes the current key - BIP key would only be uploaded correctly initially and corrupted on rekey Rework the code to better keep track of multiple keys and check for the key index before deleting the current key Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11mt76: mt7915: add support for rx decapsulation offloadFelix Fietkau
For AP and Client mode, the hardware can pass received packets as 802.3 frames that can be passed to the network stack as-is. Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11mt76: mt7915: add rx checksum offload supportFelix Fietkau
Set skb->ip_summed to CHECKSUM_UNNECESSARY if the hardware has validated the IP and TCP/UDP checksum Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11mt76: mt7915: enable hw rx-amsdu de-aggregationLorenzo Bianconi
Enable hw rx-amsdu de-aggregation support available in 7915 devices. This is a preliminary patch to enable rx checksum offload Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11mt76: add support for 802.3 rx framesFelix Fietkau
Do not try to access the header when receiving them Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11bcache: fix a regression of code compiling failure in debug.cColy Li
The patch "bcache: remove PTR_CACHE" introduces a compiling failure in debug.c with following error message, In file included from drivers/md/bcache/bcache.h:182:0, from drivers/md/bcache/debug.c:9: drivers/md/bcache/debug.c: In function 'bch_btree_verify': drivers/md/bcache/debug.c:53:19: error: 'c' undeclared (first use in this function) bio_set_dev(bio, c->cache->bdev); ^ This patch fixes the regression by replacing c->cache->bdev by b->c-> cache->bdev. Signed-off-by: Coly Li <colyli@suse.de> Cc: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20210411134316.80274-8-colyli@suse.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-04-11bcache: Use 64-bit arithmetic instead of 32-bitGustavo A. R. Silva
Cast multiple variables to (int64_t) in order to give the compiler complete information about the proper arithmetic to use. Notice that these variables are being used in contexts that expect expressions of type int64_t (64 bit, signed). And currently, such expressions are being evaluated using 32-bit arithmetic. Fixes: d0cf9503e908 ("octeontx2-pf: ethtool fec mode support") Addresses-Coverity-ID: 1501724 ("Unintentional integer overflow") Addresses-Coverity-ID: 1501725 ("Unintentional integer overflow") Addresses-Coverity-ID: 1501726 ("Unintentional integer overflow") Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Coly Li <colyli@suse.de> Link: https://lore.kernel.org/r/20210411134316.80274-7-colyli@suse.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-04-11md: bcache: Trivial typo fixes in the file journal.cBhaskar Chowdhury
s/condidate/candidate/ s/folowing/following/ Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Signed-off-by: Coly Li <colyli@suse.de> Link: https://lore.kernel.org/r/20210411134316.80274-6-colyli@suse.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-04-11md: bcache: avoid -Wempty-body warningsArnd Bergmann
building with 'make W=1' shows a harmless warning for each user of the EBUG_ON() macro: drivers/md/bcache/bset.c: In function 'bch_btree_sort_partial': drivers/md/bcache/util.h:30:55: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body] 30 | #define EBUG_ON(cond) do { if (cond); } while (0) | ^ drivers/md/bcache/bset.c:1312:9: note: in expansion of macro 'EBUG_ON' 1312 | EBUG_ON(oldsize >= 0 && bch_count_data(b) != oldsize); | ^~~~~~~ Reword the macro slightly to avoid the warning. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Coly Li <colyli@suse.de> Link: https://lore.kernel.org/r/20210411134316.80274-5-colyli@suse.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-04-11bcache: use NULL instead of using plain integer as pointerYang Li
This fixes the following sparse warnings: drivers/md/bcache/features.c:22:16: warning: Using plain integer as NULL pointer Reported-by: Abaci Robot <abaci@linux.alibaba.com> Signed-off-by: Yang Li <yang.lee@linux.alibaba.com> Signed-off-by: Coly Li <colyli@suse.de> Link: https://lore.kernel.org/r/20210411134316.80274-4-colyli@suse.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-04-11bcache: remove PTR_CACHEChristoph Hellwig
Remove the PTR_CACHE inline and replace it with a direct dereference of c->cache. (Coly Li: fix the typo from PTR_BUCKET to PTR_CACHE in commit log) Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Coly Li <colyli@suse.de> Link: https://lore.kernel.org/r/20210411134316.80274-3-colyli@suse.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-04-11bcache: reduce redundant code in bch_cached_dev_run()Zhiqiang Liu
In bch_cached_dev_run(), free(env[1])|free(env[2])|free(buf) show up three times. This patch introduce out tag in which free(env[1])|free(env[2])|free(buf) are only called one time. If we need to call free() when errors occur, we can set error code to ret, and then goto out tag directly. Signed-off-by: Zhiqiang Liu <liuzhiqiang26@huawei.com> Signed-off-by: Coly Li <colyli@suse.de> Link: https://lore.kernel.org/r/20210411134316.80274-2-colyli@suse.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-04-11Merge branch 'for-mingo-lkmm' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into locking/core Pull LKMM changes from Paul E. McKenney: misc documentation updates. Signed-off-by: Ingo Molnar <mingo@kernel.org>
2021-04-11Merge branch 'for-mingo-kcsan' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into locking/core Pull KCSAN changes from Paul E. McKenney: misc updates. Signed-off-by: Ingo Molnar <mingo@kernel.org>
2021-04-11Merge branch 'for-mingo-rcu' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu Pull RCU changes from Paul E. McKenney: - Bitmap support for "N" as alias for last bit - kvfree_rcu updates - mm_dump_obj() updates. (One of these is to mm, but was suggested by Andrew Morton.) - RCU callback offloading update - Polling RCU grace-period interfaces - Realtime-related RCU updates - Tasks-RCU updates - Torture-test updates - Torture-test scripting updates - Miscellaneous fixes Signed-off-by: Ingo Molnar <mingo@kernel.org>
2021-04-11kasan, arm64: tests supports for HW_TAGS async modeAndrey Konovalov
This change adds KASAN-KUnit tests support for the async HW_TAGS mode. In async mode, tag fault aren't being generated synchronously when a bad access happens, but are instead explicitly checked for by the kernel. As each KASAN-KUnit test expect a fault to happen before the test is over, check for faults as a part of the test handler. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Andrey Konovalov <andreyknvl@google.com> Tested-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Link: https://lore.kernel.org/r/20210315132019.33202-10-vincenzo.frascino@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2021-04-11arm64: mte: Report async tag faults before suspendVincenzo Frascino
When MTE async mode is enabled TFSR_EL1 contains the accumulative asynchronous tag check faults for EL1 and EL0. During the suspend/resume operations the firmware might perform some operations that could change the state of the register resulting in a spurious tag check fault report. Report asynchronous tag faults before suspend and clear the TFSR_EL1 register after resume to prevent this to happen. Cc: Will Deacon <will@kernel.org> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Reviewed-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Andrey Konovalov <andreyknvl@google.com> Tested-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Link: https://lore.kernel.org/r/20210315132019.33202-9-vincenzo.frascino@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2021-04-11arm64: mte: Enable async tag check faultVincenzo Frascino
MTE provides a mode that asynchronously updates the TFSR_EL1 register when a tag check exception is detected. To take advantage of this mode the kernel has to verify the status of the register at: 1. Context switching 2. Return to user/EL0 (Not required in entry from EL0 since the kernel did not run) 3. Kernel entry from EL1 4. Kernel exit to EL1 If the register is non-zero a trace is reported. Add the required features for EL1 detection and reporting. Note: ITFSB bit is set in the SCTLR_EL1 register hence it guaranties that the indirect writes to TFSR_EL1 are synchronized at exception entry to EL1. On the context switch path the synchronization is guarantied by the dsb() in __switch_to(). The dsb(nsh) in mte_check_tfsr_exit() is provisional pending confirmation by the architects. Cc: Will Deacon <will@kernel.org> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Andrey Konovalov <andreyknvl@google.com> Tested-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Link: https://lore.kernel.org/r/20210315132019.33202-8-vincenzo.frascino@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2021-04-11arm64: mte: Conditionally compile mte_enable_kernel_*()Vincenzo Frascino
mte_enable_kernel_*() are not needed if KASAN_HW is disabled. Add ash defines around the functions to conditionally compile the functions. Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://lore.kernel.org/r/20210315132019.33202-7-vincenzo.frascino@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2021-04-11arm64: mte: Enable TCO in functions that can read beyond buffer limitsVincenzo Frascino
load_unaligned_zeropad() and __get/put_kernel_nofault() functions can read past some buffer limits which may include some MTE granule with a different tag. When MTE async mode is enabled, the load operation crosses the boundaries and the next granule has a different tag the PE sets the TFSR_EL1.TF1 bit as if an asynchronous tag fault is happened. Enable Tag Check Override (TCO) in these functions before the load and disable it afterwards to prevent this to happen. Note: The same condition can be hit in MTE sync mode but we deal with it through the exception handling. In the current implementation, mte_async_mode flag is set only at boot time but in future kasan might acquire some runtime features that that change the mode dynamically, hence we disable it when sync mode is selected for future proof. Cc: Will Deacon <will@kernel.org> Reported-by: Branislav Rankov <Branislav.Rankov@arm.com> Tested-by: Branislav Rankov <Branislav.Rankov@arm.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Andrey Konovalov <andreyknvl@google.com> Tested-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Link: https://lore.kernel.org/r/20210315132019.33202-6-vincenzo.frascino@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2021-04-11kasan: Add report for async modeVincenzo Frascino
KASAN provides an asynchronous mode of execution. Add reporting functionality for this mode. Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Andrey Konovalov <andreyknvl@google.com> Tested-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Link: https://lore.kernel.org/r/20210315132019.33202-5-vincenzo.frascino@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
generated by cgit (git 2.34.1) at 2025-09-29 06:06:43 +0000